%0 Journal Article
%A O. N. Vvedenskii
%T On ``universal norms'' of formal groups defined over the ring of integers of a~local field
%J Izvestiya. Mathematics 
%D 1973
%P 733-747
%V 7
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1973_7_4_a1/
%G en
%F IM2_1973_7_4_a1